Spa Purge features a powerful acid-free formula that deep cleans spa and hot tub plumbing. A thorough plumbing clean is necessary before the initial fill of your spa, and with every regular water change. The highly concentrated, acid-free formula will deep clean the plumbing by removing unwanted buildup of organic material and debris. It attacks the root cause of maintenance problems caused by non-living organic contamination like oils, lotions, cosmetics, hair products, sweat and more. These contaminants collect and build in spas, from the circulation system to the filters. By purging the spa with Spa Purge, the symptoms of these contaminants can be reduced and eliminated. Restore the perfect operation of your spa's plumbing system today!